It's a norm pretty much everywhere to penalize people's performance reviews for failure to perform required job tasks on time, I know of no employer that doesn't do that (or, at least, expect supervisor to do it.) It may not be normal to apply a systematic penalty of a preset value to failing this precise failing (from my experience in enterprise environments, the normal consequence for a wide range of required trainings is a nag email from HR or an HR-owned bot to the supervisor and/or employee with escalating urgency,and sometimes escalating up the org chart, until some point where more formal organizational penalties are imposed, which the supervisor may or may not also use as the basis for ad hoc penalties in performance reviews even if formal direct penalties aren't imposed because the delinquency is cleared before that point.)
> For another, it throws the objectivity of performance reviews in question
Having a defined, fixed, concrete Perf penalty for a particular violation does the opposite of calling objectivity of the rating system into question.